Carbon paper pack



May 15, 1951 B. R. SALISBURY CARBON PAPER PACK Filed June 17, 1948 BRUCER. 5A1. 1:5 URY INVEN TOR.

Patented May 15, 1951 UNITED STATES PATENT OFFICE CARBON PAPER PACKBruce R. Salisbury, Portland, Oreg.

Application June 17, 1948, Serial No. 33,453

3 Claims. 1

This invention relates to improvements in carbon paper packs of the typeused in connection with continuous billing forms of either fanfold oropen-web design wherein the carbon packs are inserted between the sheetsof the continuous form.

It is one of the principal objects of this invention to provide a carbonpaper pack with two cardboard fibre leaders (main and auxiliary) insteadof the customary single leader. This eliminates the former practice ofattaching the leader of the carbon pack itself to a blade of theblade-holder or to any part of the forms carrier which feeds thecontinuous forms into the billing machine. The main leader of myinvention is attached to the blade of the forms carrier; the auxiliaryleader, to which the carbon pack is secured, may be quickly andconveniently attached and locked to the main leader and detachedtherefrom without disturbing the engagement of the main leader with theblade of the blade-holder.

A further object of the two leaders is to provide a means of adjustingthe alignment of the carbon feed laterally Within the continuous form.This adjustment within limits of one-fourth inch to either side takesplace without necessitating the removal of the main leader from theblade of the blade-holder and is brought about by sliding the auxiliaryleader either to the right or to the left, which ever is necessary tocreate the proper alignment, at the point where the auxiliary locks tothe main leader.

A still further object is that the provision of greater leader length,through the use of two leaders instead of one, brings about betteralignment of the carbon feed within the continuous form and preventscreepage of the carbon sheet from the side of the continuous form. Thetwo leaders made of cardboard fibre terminate in a closer spacedrelation to the platen of the billing machine than do the shorter typesof single leader, thereby reducing the length of the flexible carbonsheet which feeds forward into the continuous form.

A still further object of this invention is to provide for the use ofstrip carbon, if desired.

Strip carbon is a carbon tissue, a portion of which is coated withcarbon, the remainder left uncoated. Since the leader of a carbon packcannot feed under the platen of billing machines, there has heretoforebeen a certain portion of any carbon sheet, attached to a leader, whichhas been unused, due to the fact that that portion of the carbon sheetlies under the platen of the billing machine when the leader is at the;

limit of its forward position. With the use of strip carbon, only theuncoated portion of the strip carbon tissue will be wasted, thusproviding greater economy in the maximum use of the carbon sheet.

These and other objects will appear as my invention is more fullyhereinafter described in the following specification, illustrated in theaccompanying drawing, and finally pointed out in the appended claims.

In the drawing:

Figure 1 is a perspective view of a continuous billing machine showingmy new and novel carbon paper pack operatively applied thereto.

Figure 2 is a perspective view of the main leader locked to theauxiliary leader which carries the carbon paper pack.

Figure 3 is an enlarged sectional side elevation taken approximatelyalong the line 3-3 of Figure 2.

Figure 4 is a perspective view of a modified form of main leader lockedto a modified form of auxiliary leader which carries the carbon pack.

Figure 5 is an enlarged sectional side elevation taken approximatelyalong the line 5-5 of Figure l.

Figure 6 is an enlarged perspective view of the folded sheets of thecarbon pack attached to the auxiliary leader.

Referring now more particularly to the drawmg:

In Figure 1, reference numeral 1 indicates generally a billing machinehaving a platen 2 and a rearwardly extending feed rack or forms carrier3 on which the continuous billing forms 4 are fed to and around theplaten. On the feed rack is a sliding tray 4A to which are attachedvertical blade-holders 5 upon which are stacked the blades 8 by means ofslots formed near their ends. The leaders of carbon packs are attachedto these blades which must be inserted between the individual sheets ofthe continuous form to permit that continuous form to be pulled forwardwithout obstruction while the blade-holder is held stationary.Heretofore when inserting carbon packs, it has been necessary to removethe blades from the blade-holder in order to attach the leader of thecarbon packs thereto. This results in considerable waste of time on thepart of the operator.

As previously stated, one of the objects of the present invention is toprovide a main leader, indicated at l, which remains permanentlyattached to a blade by being folded there-around and locked thereto bymeans of any approved form of paper clip or spring metal clamp asindicated at 9. The opposite end of each main leader is formed with aplurality of aligned slots II] to receive tongues I l punched out of theau'xiliary leader l2 as shown. By means of these tongues and slots, theauxiliary leader which carries the carbon pack may be quickly andconveniently locked to the main leader by a relative longitudinalmovement in respect thereto in inserting the tongues into the slots.Conversely,

to detach the auxiliary leader from the main leader, the tongues arewithdrawn from the slots. The length of the slots is greater than thewidth of the tongue to permit of the adjusting of the auxiliary leaderwith respect to the main leader for adjusting the alignment of thecarbon feed laterally within the continuous form, as aforesaid.

To prevent accidental removal or disengagement of the auxiliary leader,I provide a locking means in the form of a sheet is which may be made oftransparent material if desired, and hinged to the main leader by meansof a strip of adhesive material Hi to provide a convenient means oflifting the sheet is for access to the auxiliary leader and its carbonpack.

In the modified form of main and auxiliary leaders indicated at l5 and16in Figures 4 and 5, the main leader is folded back on itself as at I!to form a transverse pocket I8 to receive the folded under end E8 of theauxiliary leader 1%. One end of the pocket 18 is stapled as at NBA andits opposite end open for convenience in presenting both leaders forengagement with each other by an inwardly sliding motion-from one side;The folded under end 19 of the auxiliary leader I6 is stapled as shownat [9A. This form of invention is particularly adapted for use in thefanfold type of billing forms which are attached along one of theiredgesfor example, the edge corresponding with the edge of the leader atthe side wherethe pocket I8 is formed by the staples I8A.* By thisengagement, the auxiliary leader of the carbon pack attached thereto maybe conveniently slid outwardly from between the fanfold billing formswithout the necessity of separating the continuous forms along theirunited edges. To prevent accidental detachment of the two leaders Iattach the sheet of transparent material I3 to the main leader as in theform of the invention shown in Figures 2 and 3.

In Figure 6 is shown a plurality of the folded carbon sheets 28 whichcomprise the carbon pack. These carbonized sheets are attached bystaples 20A to the folded end 21 of the auxiliary leader I2 or IS. Thefolded carbonized sheets are coated for a portion of their length asindicated at 22 and uncoated for the remainder of the sheet as shown at23.

While I have shown a particular form of embodiment of my invention, I amaware that many minor changes therein will readily suggest themselves toothers skilled in the art, without departing from the spirit and scopeof the invention.

Having thus described the invention, what I claim as new and desire toprotect by Letters Patent is: V

1. A carbon paper pack including a detachable leader for use with amanifold typing machine having a platen roller, type bars, feed rollers,a shiftable pack carrier and a forms carrier for directing continuousbilling forms into said platen and feed rollers, said pack comprising anauxiliary leader and a plurality of stacked carbon sheets secured alongone of their edges to one edge of said auxiliary leader, a main leaderhaving means formed at one of its ends for attachment to said packcarrier and means formed at its opposite end for removable engagementwith said auxiliary leader whereby said pack may be removed from betweensaid billing forms without disturbing the attachment of said main leaderto said pack carrier, and means carried by the main leader for lockingthe auxiliary leader thereto against unintentional removal.

2. A carbon paper pack includin a detachable leader for use with amanifold typing machine having a platen roller, type bars, feed rollers,a shiftable pack carrier and a forms carrier for directing continuousbilling forms into said platen and feed rollers, said packcomprising amain leader and an auxiliary leader, a plurality of folded and stackedcarbon sheets secured along one of their edges to one edge of saidauxiliary leader, and means formed in the opposite end of the auxiliaryleader for locking engagement with means formed in one end of said mainleader, the opposite end of said main leader being formed and providedwith means'for attachment to said pack carrier, said first mentionedmeans consisting OI slots formed in the main leader to receive tonguesformed in the auxiliary leader, said slotsbeing of greater length thanthe width of said tongues to permit relative lateral movement of bothleaders for adjusting the alignment of the carbon sheets laterallywithin said continuous forms.

3. A carbon paper pack including a detachable leader for use with amanifold typing machine having a platen roller, type bars, feed rollers,a shiftable pack carrier and a forms carrier for directing continuousbilling forms into said platen and feed rollers, said pack comprising anauxiliary leader folded back on itself at one of its ends, a pluralityof folded and stacked carbon sheets secured along one of their edges toone edge of said auxiliary leader, each of said sheets beingcarbon-coated for a portion of its length and uncoated for the remainderof its length, a main leader folded back on itself at one of its endsfor removable attachment to the said folded portion of the auxiliaryleader, and means carried by the main leader and overlying the auxiliaryleader and the carbon sheets carried thereby to prevent unintentionaldisengagement of the auxiliary leader from the main leader.

BRUCE. R. SALISBURY.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS 2,441,622 Doyle May 18, 1948

